Nonruminant Nutrition: Grow/Finish - Energy & Protein
نویسنده
چکیده
Five experiments were conducted to set up the ideal pattern of amino acid requirement of Pekin ducks.In experiment 1,the digestibility of some animo acids in the basal diet were determined,including lysine(Lys),methionine(Met),tryptophan(Trp),threonine(Thr),and isoleusine(Ile).In experiment 2,the growth performance was investigated to effet of different levels of Lys,Met,andTrp,and their interaction under a 3×3 factoral arrangement. the experiment 3 was conducted to evaluate the influence of different levels of Trp,Thr,and Ile ,and their interaction.The experiment 4 was carried out to investigate the effacy of different levels of Trp,Thr,and Ile in a lower protein-diet. In experiment 5,based on the results above, six amino acid models were used to test in order to select a ideal model. The results showed that Lys,Met,Trp,Thr,and Ile requirement of Pekin ducks during 0 2 week was 1.10%,0.46%,0.24%,0.42%,and 0.53% resp.,and the digestive amino acid requirement was 1.02%,0.44%,0.21%,0.38%,and 0.47% resp..The total amino acid ideal pattern for duckling was:Lys:Met:Trp:Thr:Ile =100:41:21:38:48,and the digestive amino acid ideal pattern was: Lys:Met:Trp:Thr:Ile=100:43:21:37:46.
منابع مشابه
Nonruminant nutrition symposium: understanding protein synthesis and degradation and their pathway regulations.
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